Soft sensor approach based on magnetic Barkhausen noise by means of the forming process punch-hole-rolling

Mühl, Fabian; Knoll, Maximilian; Khabou, Mohamed Taoufik; Dietrich, Stefan; Groche, Peter; Schulze, Volker

doi:10.1016/j.aime.2021.100039

Cited by 3 publications

(5 citation statements)

References 25 publications

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“…[11][12][13][14] In their paper, Mühl et al showed that the hardness of the material after punch-hole-rolling can be correlated with the root mean square value of the Barkhausen noise signal. [9]. Furthermore Spies et al have shown in their paper that this is also true for the amplitude of the signal and that it can also be correlated with the alpha martensite volume fraction and the plastic strain in 1.4301.…”

Section: Fig 5 Trend Of Surface Hardness Over the Inner Radius In Pun...mentioning

confidence: 85%

“…The collar height was found to increase approximately linearly with the change in radius. In [9], it was additionally found that changing the radial feed rate of the process leads to a change in the gradient of the graph. Thereby, a higher feed rate leads to a lower gradient and thus to a lower collar height.…”

Section: Characteristic Of the Collar Height In Punch-hole-rollingmentioning

confidence: 99%

“…In DC04, the hardening of the material due to punch-hole-rolling was measured for the first time. To determine the characteristics more closely in [9] specimens from the previous tests primarily concerning the collar height were examined in more detail. It was discovered that the hardness rises with increasing radius and thus deformation, but remains constant above a certain point.…”

Section: Characteristic Of the Hardness Of The Inner Surface In Punch...mentioning

confidence: 99%

“…Moreover, a concept was presented for the integration of the sensor into a future test rig. [8] All correlations were identified by taking offline measurements and comparing them with the results of conventional measuring processes [8,9]. Using this data, the online Barkhausen noise measurements can be converted into the product properties of interest.…”

Section: Fig 5 Trend Of Surface Hardness Over the Inner Radius In Pun...mentioning

confidence: 99%

“…magnetic Barkhausen noise and hardness) are used to estimate the actual states of the controlled variables. [8,9] These are then in turn used in the feedback loop of the control scheme to determine the control deviation.…”

Section: Concept For a Multivariable Product Property Control In Punc...mentioning

confidence: 99%

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Conception of a multivariable product property control for punch-hole-rolling

Spies

2023

Materials Research Proceedings

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Abstract. Process controls are getting increasingly more common in forming. Nevertheless, they are not suitable to achieve consistent quality when dealing with varying process disturbances. Differing properties of the raw material and other external influences like temperature variations and vibrations make it hard to achieve the tightly specified tolerances needed in today’s production environment. Product property controls represent a solution for these difficulties and create the opportunity to integrate additional functionality into the product and the process. In this project, the implementation of a multivariable product property control is investigated using the example of a recently developed process, called punch-hole-rolling. It is targeted to control product properties such as the collar height and the hardness on the inner surface. It has been shown in previous publications that it is possible to control the collar height in 1.0338 by carefully choosing suitable process parameters. In recent works the possibility was presented to control the hardness by changing the same parameters, using the TRIP steel 1.4301. The publication at hand aims at proving the feasibility of the multivariable product property control by reviewing the previous results for 1.4301 and proving that it is possible to control the collar height and the hardness on the inside of the collar simultaneously. Further, a concept is presented for the implementation of such a control.

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Section: Fig 5 Trend Of Surface Hardness Over the Inner Radius In Pun...mentioning

confidence: 85%

Section: Characteristic Of the Collar Height In Punch-hole-rollingmentioning

confidence: 99%

Section: Characteristic Of the Hardness Of The Inner Surface In Punch...mentioning

confidence: 99%

Section: Fig 5 Trend Of Surface Hardness Over the Inner Radius In Pun...mentioning

confidence: 99%

Section: Concept For a Multivariable Product Property Control In Punc...mentioning

confidence: 99%

See 3 more Smart Citations

Conception of a multivariable product property control for punch-hole-rolling

Spies

2023

Materials Research Proceedings

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Barkhausen Noise monitoring of microstructure and surface residual stress in maraging steel manufactured by Powder Bed Fusion and aging

Oliveira

Jovičević‐Klug

Oliveira

et al. 2021

Int J Adv Manuf Technol

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Softsensors: key component of property control in forming technology

Homberg,

Arian,

Arne

et al. 2023

Prod. Eng. Res. Devel.

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The constantly increasing challenges of production technology for the economic and resource-saving production of metallic workpieces require, among other things, the optimisation of existing processes. Forming technology, which is confronted with new challenges regarding the quality of the workpieces, must also organise the individual processes more efficiently and at the same time more reliably in order to be able to guarantee good workpiece quality and at the same time to be able to produce economically. One way to meet these challenges is to carry out the forming processes in closed-loop control systems using softsensors. Despite the many potential applications of softsensors in the field of forming technology, there is still no definition of the term softsensor. This publication therefore proposes a definition of the softsensor based on the definition of a sensor and the distinction from the observer, which on the one hand is intended to stimulate scientific discourse and on the other hand is also intended to form the basis for further scientific work. Based on this definition, a wide variety of highly topical application examples of various softsensors in the field of forming technology are given.

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Soft sensor approach based on magnetic Barkhausen noise by means of the forming process punch-hole-rolling

Cited by 3 publications

References 25 publications

Conception of a multivariable product property control for punch-hole-rolling

Conception of a multivariable product property control for punch-hole-rolling

Barkhausen Noise monitoring of microstructure and surface residual stress in maraging steel manufactured by Powder Bed Fusion and aging

Softsensors: key component of property control in forming technology

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